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shader_jit_x64: Execute certain asserts at runtime. 

- This is because we compile the full shader code space, and therefore its common to compile malformed instructions.
This commit is contained in:
bunnei 2016-04-02 00:02:03 -04:00
parent ffcf7ecee9
commit f3afe24594
2 changed files with 19 additions and 5 deletions
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18
src/video_core/shader/shader_jit_x64.cpp
View File

@ -146,6 +146,16 @@ static Instruction GetVertexShaderInstruction(size_t offset) {
return { g_state.vs.program_code[offset] };
}
static void LogCritical(const char* msg) {
LOG_CRITICAL(HW_GPU, msg);
}
void JitCompiler::RuntimeAssert(bool condition, const char* msg) {
if (!condition) {
ABI_CallFunctionP(reinterpret_cast<const void*>(LogCritical), const_cast<char*>(msg));
}
}
/**
* Loads and swizzles a source register into the specified XMM register.
* @param instr VS instruction, used for determining how to load the source register
@ -667,8 +677,7 @@ void JitCompiler::Compile_MAD(Instruction instr) {
}
void JitCompiler::Compile_IF(Instruction instr) {
ASSERT_MSG(instr.flow_control.dest_offset > last_program_counter, "Backwards if-statements (%d -> %d) not supported",
last_program_counter, instr.flow_control.dest_offset.Value());
RuntimeAssert(instr.flow_control.dest_offset > last_program_counter, "Backwards if-statements not supported");
// Evaluate the "IF" condition
if (instr.opcode.Value() == OpCode::Id::IFU) {
@ -699,9 +708,8 @@ void JitCompiler::Compile_IF(Instruction instr) {
}
void JitCompiler::Compile_LOOP(Instruction instr) {
ASSERT_MSG(instr.flow_control.dest_offset > last_program_counter, "Backwards loops (%d -> %d) not supported",
last_program_counter, instr.flow_control.dest_offset.Value());
ASSERT_MSG(!looping, "Nested loops not supported");
RuntimeAssert(instr.flow_control.dest_offset > last_program_counter, "Backwards loops not supported");
RuntimeAssert(!looping, "Nested loops not supported");
looping = true;

6
src/video_core/shader/shader_jit_x64.h
View File

@ -90,6 +90,12 @@ private:
BitSet32 PersistentCallerSavedRegs();
/**
* Assertion evaluated at compile-time, but only triggered if executed at runtime.
* @param msg Message to be logged if the assertion fails.
*/
void RuntimeAssert(bool condition, const char* msg);
/**
* Analyzes the entire shader program for `CALL` instructions before emitting any code,
* identifying the locations where a return needs to be inserted.